The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 1992
Filed:
Dec. 21, 1990
Applicant:
Inventors:
Fabio Vidimari, Milan, IT;
Sergio Pellegrino, Turin, IT;
Assignee:
Telettra S.p.A., , IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 46 ; 372 45 ;
Abstract
A process for producing a multilayer device which emits coherent luminous radiation (laser radiation) upon the application of electric power. The device consists of a substrate, a first epitaxial layer, an active layer having a composition which emits luminous radiation of a desired wavelength, an optical and electric confinement layer, a further optical and electric confinement layer and an electric contact layered structure. To concentrate current flow through the active layer, the adjacent layer is implanted with ions of transition elements, preferably Co or Fe, which, when annealed by thermal treatment, have a high resistivity.